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  1. Adrian_

    Preventing corrosion on battery and phase terminals.

    I have an issue with corrosion on my battery and motor phase terminals. The way I have my controller mounted, I can't waterproof it very well and can only prevent splashing and large amounts of water. From time to time when I'm doing basic maintenance, I'll take the terminals off and quickly...
  2. Adrian_

    Sabvoton regen current setting is inaccurate?

    I have a Sabvoton SVMC72150-M with a QS 273 V3 5T motor. I'm trying to get regen working when braking not to recharge the battery but mostly for braking assistance and to prolong the life of my brake pads. I have a 20S14P Panasoic NCR18650GA battery, rated charge current of those cells is 1.45A...
  3. Adrian_

    QS 273 motor damaged by water?

    I have a QS 273 V3 5T motor with about 800 miles on it. Yesterday I was doing a full throttle pull from stand still when at about 20 mph the throttle cut out and the whole bike started vibrating, it felt like phase wires were shorted. I pulled over and then got a "Hall sensor" error on my...
  4. Adrian_

    Is it safe to take apart a battery charger?

    So I have this battery charger https://www.aliexpress.com/item/1005004128152511.html?spm=a2g0o.order_list.0.0.23001802LgOIId I left my battery to charge overnight and in the morning, the battery voltage was at 79v not 84v. Tried replugging it but nothing. I thought maybe the battery was spanked...
  5. Adrian_

    Working out max regen current.

    I have a 20S14P Panasonic NCR18650GA battery that I would like to find out the maximum regen current that I can put though it. I use it with a 8000w motor and I keep warping my disc rotors so I would like to use regen to slow me down.
  6. Adrian_

    Sabvoton SVMC72150M mysterious black, brown and yellow connector.

    I bought a SVMC72150M V1 controller and I'm trying to figure out what the black, brown and yellow connector is for. The wiring diagram that I got with it is slightly different and doesn't have that connector in it. Googling doesn't give me a definitive answer either. There's multiple wiring...
  7. Adrian_

    Testing battery capacity.

    I have couple of batteries that I would like to test the capacity of as they have a lot of charging cycles on them. I have 1A load tester that I was thinking of plugging it into a fully charged battery and then start a stop watch and see how long it will take for the battery to discharge but I...
  8. Adrian_

    Do Sabvoton SVMC controllers all come with PAS?

    I'm trying to find out if all Sabvoton SVMC controllers come with PAS connection or only certain models? Googling wiring diagram, it does not show wiring for PAS but I found few listings on AliExpress that show a PAS plug and mention PAS in the description but not all of them.
  9. Adrian_

    Using 5-pin display with a 6-pin controller.

    My controller died so I ordered a new one but I ran into an issue with the display connector. My old controller and display uses a 5-pin connector which I believe is the standard one as this is the only connector that I seen used with displays but the new controller uses a 6-pin connector. I...
  10. Adrian_

    Faulty controller or motor?

    I was out riding my bike (48v 1000w) and everything was fine and then I stopped at a red light, when I tried to set off, the motor was very loud like it was running without hall sensor and it was lacking power, it felt like 300w. I stopped, checked all connections and everything seemed fine, I...
  11. Adrian_

    Chinese 72v 70ah battery. Could it be real?

    I'm currently building my third stealth bomber clone which will be my first 72v 8000w bike, the first 2 I built were 48v. I'm currently looking for the biggest battery that I can fit in those frames, my battery budget is around $1000. I found few listings on AliExpress for 72v 70ah batteries...
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